(family Fabaceae, subfamily Papilionatae)
A genus of vetch-like (see Vicia), twining herbs, usually with 3 leaflets, and with showy flowers grouped on long peduncles. Nine of the stamens are joined below, 1 is free. The style has a line of hairs along 1 side only. The pods are not flattened. There are about 150 species, occurring in the topics, especially in the Old World.
Subjects: Plant Sciences and Forestry.